Mistakes are the bosses problem, you have either trained them wrong, hired incompetent people or price your work too cheap that your even counting the mistakes.
raise your prices, train your staff....
~look in the mirror~
This. I don't care how much you try, most of this falls on the person who hires and fires. If they aren't cutting it, cut them.
Many of my employees have made and continue make careless mistakes and i causing the shop to lose alot of Money. This can be avoided but continues. Has anyone at to the point where they charge for careless misprints?